Semester 2 Final: Question Preview (ID: 25833)

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When a force is applied to an object it may:
a) start an object moving.
b) stop an object’s motion.
c) change the direction of a moving object.
d) All of the above

The ratio of output force to input force is called:
a) simple machine.
b) technology.
c) mechanical advantage.
d) energy.

All of the following are considered to be simple machines EXCEPT:
a) gears.
b) a bicycle.
c) a ropes and pulley.
d) a ramp.

Any action that is able to change the motion of a body is called a _________.
a) newton
b) weight
c) friction
d) force

An object at rest tends to stay at rest and an object in motion tends to stay in motion in a straight line summarizes a portion of Newton’s __________________ law.
a) second
b) unbalanced
c) first
d) third

A force that slows down a car _________________.
a) newton
b) weight
c) friction
d) force

The ______________ is the English unit of weight equal to about 4.448 newtons.
a) newton
b) pound
c) friction
d) force

If the forces on an object all cancel out so the total force is zero, the forces are called ______________.
a) second
b) first
c) unbalanced
d) balanced

Gravitational force on the Moon is more than gravitational force on Earth.
a) true
b) false

A telescope that uses mirrors instead of lenses to focus distant light at the focal point is known as a reflecting telescope.
a) true
b) false

Jupiter, Saturn, Uranus, and Neptune are composed mostly of gases.
a) true
b) false

Which of the following is classified as an inner planet?
a) Mercury.
b) Saturn
c) Uranus.
d) Jupiter.

Which of the following is classified as a gas planet?
a) Jupiter.
b) Venus.
c) Mercury.
d) Mars.

The planet which appears brightest in the night sky is:
a) Mercury
b) Venus
c) Mars
d) Saturn

How do gas planets differ from terrestrial planets?
a) They do not fewer moons.
b) They have thinner atmospheres.
c) They are farther from the Sun.
d) They are more dense.

A group of small rocky objects found in a belt between Mars and Jupiter are known as:
a) meteorites.
b) comets.
c) asteroids.
d) meteors.

Pieces of rock from space large enough to pass through Earth’s atmosphere and strike the ground are called:
a) meteorites.
b) meteors.
c) comets.
d) asteroids.

Ancient astronomers were able to develop early models of the solar system more than 1,000 years ago using:
a) simple telescopes.
b) refracting telescopes
c) satellites.
d) their eyes.

The type of telescope using lenses to gather visible light is called a(n):
a) reflecting telescope
b) radio telescope
c) refracting telescope
d) X-ray telecope

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